Originally Posted by
harter66
This has sorta left the track of my op but also brought out good points. My original quest was to find a better "why"for the small cal.,.30,8mm in my case,lack of high BC spire pointed type cast bullets or moulds. To date I've had "the tips get deformed too easy""they're too hard to get to shoot well/consistantly"and my favorite"you're an idiot if you're punching paper with TSX's". This thread has reinforced my belief that it can be done and that it will be sucessful enough for just about any caster shooter to do well.
My bullet as of now tips in at 200 grains has a .11 meplat and a calculated BC of .476 . So far hitting 1800 in any of the rifles hasn't happened due mostly ,at this point ,to lube failure. I need 1725 to get the minimum legal energy limit.
As I said, in the lower velocity ranges, a round nosed bullet can actually be more aerodynamic. I think that is at the speed of sound or below. You may be above that range, at 1700 fps.
However, at that velocity you get rainbow trajectories anyway so why do you care about bc?
You want help with this go to the
cast boolits forum. They know their stuff.